Loom stop-motion.



J. L. LONG.

LOOM STOP MOTION.

APPLICAHON FILED SEN-14.1917- mszflwm Patented 00'. 29, 1918.

JESSE L. LONG, 01? MANCHESTER, GEORGIA.

LOOM STOP-MOTION.

Specification of Letters Patent.

Patented (Pet. 29, 1918..

' Application filed September 14, 1917. Serial No. 191,384.

To all whom it may concern:

Be it known that 1, Jesse L. Lone, a citizen of the United States,residing at Manchester, in the county of Meriwether, State of Georgia,have invented certain new and useful Improvements in Loom Stop-Motions;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains, to make and use the same.

This invention relates to stop motion for looms.

The object of the invention is to provide an improved form of stoppingmechanism which is operative by any one of the treadles, when a treadlestrap breaks to stop the loom. In carrying out the invention it is theintention to utilize the warp stop motion'of the loom, in associationwith the treadle operated mechanism, so that the machine will be stoppedin the same manner as when a warp thread breaks.

'In the embodiment which is hereinafter described, the invention isapplied to a machine which is provided with a drop wire stop motion, inwhich detectors or drop wires fall across a feeler bar which vibratesbelow the set of drop wires. The mechanism of my invention operatesagainst the same feeler bar, upon the breakage of a treadle strap andthe consequent falling of the treadle, to cause the stopping of themachine.

In Fig. 1 of the drawings the warp 1 runs over the whip-roll 2 andthrough the detectors or drop wires 3 of the stop motion mechanism, andthence through the heddle frames 4. The heddle frames are controlled inthe usual manner by means of the treadle straps 5, whose lower ends areconnected to the treadles 6, the latter being operated in the usualmanner by means of the cams 7 upon the cam shaft 8.

The stop wires or detectors 3 form a part of a wellknown warp stopmotion, and operate upon the detector or feeler 9 which is mounted uponthe rock shaft 10, so that as the shaft is oscillated the lower edge ofthe detector bar-9 swings in an are below the rock shaft.

Supported upon a bracket 11 which is secured to a suitable fixed part ofthe frame of the loom, is a horizontally disposed rock lever 12 Whoseforward end extends to a point above the free ends of the treadles 6.Said forward end of the rock lever 12 suspends, by means of an adjustinglink 13 a substantially rectangular frame 14 which surrounds the wholebank of treadles 6, in such a manner that the sides and bottom of theframe stand wholly free of the treadles when the latter are in normalarrangement, as, best indicated in Fig. 2. The rear end of the rocklever 12 carries a vertical rod 15 in pivotal relation, the upper end ofthe rod 15 projecting through the horizontal rest 16 of a bracket 17which is also secured to a fixed point of the frame of the loom inproximity to the detector bar 9. The rod .15 is surrounded above therest 16 with a stpp collar 18 which is adjustably set by means of ascrew 19 so as to limit the downward movement of the rod 15 by strikingagainst the upper face of the rest 15. The upward movement of the rod 15beyond the limit determined by the collar 18 carries the free or upperend thereof into the path of movement of the detector bar 9, andtherefore has the same effect upon the latter as would the dropping ofone of the detectors or drop wires 3. I

In the operation of the above described mechanism, the frame 1% whichnormally stands free of the treadles 6 is caught by the downwardmovement of a falling treadle which has been released by the breaka e ofone of the treadle straps 5. The weig t of the treadle is such that itcarries the frame 14 downwardly when it contacts the lower side of thelatter, with the result that the rock lever 12 is rocked upon itsfulcrum to throw the rod 15 upwardly. As a result, the

.upper end 'of the rod intercepts the feelerbar 9, and stops itsvibration, so that the warp stop motion is thrown into operation in thesame manner as when one of the detector wires 3 falls. Thus, I haveprovided a simple mechanism for actuating the stop motion of a loom uponthe breaking of a treadle strap, and I have found by the use of thismechanism that the bad cloth or seconds from a loom will be reduced atleast twenty per cent. The mechanism is particularly adapted to use onlooms with three or more sets of harness, where, when one shade isdropped, two or more are left to'operate so that a lot of bad cloth ismade. By the use of a drop partial stop motion, the number will beinstantly stopped, and this manufacture of bad cloth prevented.

What I claim as my invention is In a loom, the combination with theharness treadles of a warp stop motion having a vibrating detector bar,a loom stop motion comprising a support fixed above the treadles andbelow the vibrating detector bar, re-

aeaeea spectively, a rocking arm adjustably pivoted to the support abovethe treadles, a rest on the 'loom frame below the vibrating bar, a 7 rodpivoted to one end of the arm and working through the rest to beprojected into the path of the vibrating bar, an adjustable collar onthe rod and normally seated on the rest, a frame about the treadleshaving a Jesse L. Lone. Witnesses L H. HARDEN, v W. T. Rosana.

